Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
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hard starting need help

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Old Feb 1, 2014 | 07:18 AM
  #1  
ron1979's Avatar
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From: jackson ga
Year: 1992
Model: Cherokee
Engine: 4.0 ho
Default hard starting need help

I half to cycle fuel pump repeatable to start every day any one know why please help
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Old Feb 1, 2014 | 08:26 AM
  #2  
cruiser54's Avatar
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Originally Posted by ron1979
I half to cycle fuel pump repeatable to start every day any one know why please help
When it starts, does it run smoothly?

If so, your fuel pump check valve is likely the culprit.
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Old Feb 1, 2014 | 08:45 AM
  #3  
ron1979's Avatar
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From: jackson ga
Year: 1992
Model: Cherokee
Engine: 4.0 ho
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Yes runs smooth when started
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Old Feb 1, 2014 | 09:47 AM
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Originally Posted by ron1979
Yes runs smooth when started
I think the check valve is in the fuel pump on yours.

If it was leaking injectors, it would most likely sputter on start-up.
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Old Feb 1, 2014 | 11:04 AM
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From: Texas
Year: 1993
Model: Cherokee
Engine: 4.0L
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I went through this with my '93 some years ago and it turned out to be fuel drain back due to a faulty check valve in the tank. Check this by pressing the valve on the fuel rail after the Jeep has been sitting awhile and the engine is cold. A strong squirt means that your problem is probably something else.

Solved by adding an inexpensive external check valve off eBay (~$16). Installs easily back by the fuel filter which is probably due for replacement in any event.

Mine now holds full fuel pressure indefinitely and starts first time every time.
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